Bridging the Gap Between Reality and Simulations: An Ethernet Case Study

Rathod, Punit; Perur, Srinath; Rangarajan, R.

doi:10.1109/icit.2006.33

Cited by 4 publications

(1 citation statement)

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“…This section will be exploring about three mainstream simulators that may be suitable for our simulation needs which are ns-2, OPNET, and OMNeT++. We take account that vital factors influencing the choose of simulator are ease of use, cost, and importantly, the availability of simulation models for desired applications [27].…”

Section: Comparisons Of Several Network Simulatorsmentioning

confidence: 99%

Cross-layer mimo-links exploiting packet switching and adaptive modulation for TCP/IP enabled volcano monitoring networks

Anggadjaja¹

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LIST OF TABLES mechanism with the aim of improving overall goodput. Several simulations are derived which make use of the TCP protocol through the use of an open-source simulation package within the OMNeT++ environment named INET. Scenario models are created from a single protocol link and then extended into dual wireless sub-channels, and the final interesting quad-parallel independent link model (Quad-PILM). For both dual-and quad-link models, two novel switching methods SWS and PLD and two retry scenarios are set up: RDL and RRL, to explore how re-transmissions can be adjusted to take advantage of short-term channel imbalances. We investigate the system in the light of goodput under various channel differences. As a final model, a BER-directed adaptive modulation switching scheme, based on a quad-parallel link model, is evaluated. This cross-layer design relates to physical, data link, and transport layers. Although it technically breaks a strict layering concept, even a simple switching scheme with a very clean layered interface, is shown to yield a performance improvement. Based on our analysis, we determine the degree of improvement achievable through the proposed scheme, and show that the technique may be advantageous for multiple antenna systems employed in cross-layer designs. This thesis demonstrates that even quite simple switching heuristics and twoway packet rerouting mechanisms can provide an overall improvement in a common real-world situation where MIMO sub-channels exhibit slightly unequal error rates for durations of one or more transmission frames.

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Section: Comparisons Of Several Network Simulatorsmentioning

confidence: 99%